小米2021校招 软件开发方向
1.
#include <iostream>
#include <string>
using namespace std;
int check(string passwd)
{
if(passwd.length() > 120 || passwd.length() < 8) return 1;
bool containDigit = false, containSign = false, containUpper = false, containLower = false;
for(char c : passwd) {
if(isdigit(c)) containDigit = true;
else if(isupper(c)) containUpper = true;
else if(islower(c)) containLower = true;
else containSign = true;
}
if(containDigit && containSign && containUpper && containLower) return 0;
return 2;
}
int main() {
string passwd;
while(cin >> passwd) {
cout << check(passwd) << "\n";
}
return 0;
}
2.
#include <iostream>
#include <vector>
using namespace std;
bool check(vector<string>& chars, vector<string>& used, string& target, int p, int i, int j)
{
if(p == target.size()) return true;
if(i == chars.size() || i < 0 || j == chars[0].size() || j < 0) return false;
if(used[i][j] == '1') return false;
if(target[p] != chars[i][j]) return false;
used[i][j] = '1';
if(check(chars, used, target, p + 1, i, j + 1)) return true;
if(check(chars, used, target, p + 1, i, j - 1)) return true;
if(check(chars, used, target, p + 1, i - 1, j)) return true;
if(check(chars, used, target, p + 1, i + 1, j)) return true;
used[i][j] = '0';
return false;
}
bool solve(vector<string>& chars, string& target)
{
if(target.empty()) return false;
vector<string> used{"0000", "0000", "0000", "0000"};
for(int i = 0; i < chars.size(); ++i) {
for(int j = 0; j < chars[i].size(); ++j) {
if(check(chars, used, target, 0, i, j)) return true;
}
}
return false;
}
int main() {
vector<string> chars {"ABCE", "SFCS", "ADEE"};
string target; cin >> target;
bool res = solve(chars, target);
if(res == true) {
cout << "true";
} else {
cout << "false";
}
return 0;
}
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